Craftsman 174 pc Mechanics Tool Set # 31892 Mechanic's Tool Set includes Metric and Standard Tools 93 sockets in 1/4, 1/2 and 3/8 in. drive sizes, deep well and standard depths Also includes 21 screwdriver & nutdriver bits, hex keys, 3 quick release ratchets and (12) 6pt wrenches Includes 20 Combination Ignition Wrenches - 10 Metric and 10 Standard The Mechanic's Tool Set comes in a convenient and portable briefcase style plastic carrying case.